Malicious PDF — malware analysis report

Static analysis result for SHA-256 610e84ee4e112d52…

MALICIOUS

PDF

139.4 KB Created: 2021-06-08 16:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b59b24c0057510d17dcaf765bec883e9 SHA-1: 056befa2bc762b99a58c459e0bc9fad1d0848f6d SHA-256: 610e84ee4e112d52f8522fb49ce4aac4b87a5f9c2a2bbc68b41b93bae7587f06
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many of which point to link farms hosted on disposable domains, suggesting an attempt to obscure the true destination. One prominent URI, 'https://laborke.ru/pbw?utm_term=wrestling+revolution+3d+mod+apk+wwe+2k19', appears to be a lure for downloading software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://laborke.ru/pbw?utm_term=wrestling+revolution+3d+mod+apk+wwe+2k19 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465144/normal_601b011932a62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450907/normal_604cbf7dc845d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451753/normal_6044d80d8bf30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_6007c2c52b002.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381287/normal_6003eb3f75a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455659/normal_6029c6a1a4d48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_6053233c91664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370275/normal_6048ed887fc45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474206/normal_60358252b26d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vugufosenene.pbworks.com/w/file/fetch/144711996/rcog_guidelines_for_iron_deficiency_anaemia_in_pregnancy.pdfIn PDF document text
    • http://difusowafid.pbworks.com/w/file/fetch/144659520/exemple_de_lettre_de_remerciement_pour_un_ministre.pdfIn PDF document text
    • http://pamotekegopa.pbworks.com/w/file/fetch/144439689/64179152009.pdfIn PDF document text
    • http://sagidetubi.pbworks.com/f/mujhe_khone_ke_baad_ek_din_tum_mujhe_yaad_karoge_lyrics_mp3_download.pdfIn PDF document text
    • http://jajafad.pbworks.com/f/63520162268.pdfIn PDF document text
    • http://ronefete.pbworks.com/f/2268639092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/891e539e-5880-4c2d-8358-bf7c884048a3/coleman_roadtrip_lxe_grill_propane_hose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd689f42-a2f0-457c-b3b2-78fa84b456d2/battle_angel_alita_wiki_nova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed0f5ca-0673-49b7-b1c4-8d0690dcba71/2924466412.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0001f2ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F2AD 18520 bytes
SHA-256: 74c94db2ae76338e80763f5ff520e906ca85ae4ce5496c0c5348330f6fad9718
font_00_sfnt_off000169e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169E0 13216 bytes
SHA-256: d8399acdeffacb6dc6161839d11b63c7780e767620d368ea59360e837e922188
font_01_sfnt_off00019549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19549 5896 bytes
SHA-256: d9f1ca921ce8816cc03b324d2aa2ea92c89778329f29893a1ad60009c6a09613
font_02_sfnt_off0001a95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A95A 2212 bytes
SHA-256: d8dc87f62386ad6ff58b19e3e23681cec1a297ba98e3c5ea67be0feb9b59df6d
font_03_sfnt_off0001b369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B369 6820 bytes
SHA-256: fe33f045182e6e978e14bc51c98ad257e1cb185e202f1b4d0e500700dbc8bfa4
font_04_sfnt_off0001c5a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C5A1 14016 bytes
SHA-256: b91726e81169dc115f30d8c5b0759695d647a4da39697429ad0a9d3d345f239f
font_06_sfnt_off00020fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20FEF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.